下列属于自然牙列咬合状态的是()
A.正中平衡
B.前伸平衡
C.侧方平衡
D.尖牙保护
E.完善的接触平衡
参考答案:D
精液标本采集后,放在哪种容器中送检的方式是不正确的
A.塑料试管
B.玻璃试管
C.防水纸盒
D.避孕套
E.专用精液收集瓶
A vessel would be referred to as tender when the weight of the cargo is().
A.evenly distributed vertically and the double bottoms are full
B.concentrated low and the double bottoms are empty
C.concentrated low and the double bottoms are full
D.concentrated high and the double bottoms are empty